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M. Uswah Pawara
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uswah.pawara@lecturer.itk.ac.id
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ismatech.journal@itk.ac.id
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Gedung B306. Jl. Soekarno Hatta No.KM 15, Karang Joang, Kec. Balikpapan Utara, Kota Balikpapan, Kalimantan Timur 76127
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INDONESIA
Indonesian Journal of Maritime Technology or abbreviated (ISMATECH)
Published by Institut Teknologi Kalimantan
ISSN : -     EISSN : 3025518X     DOI : https://doi.org/10.35718/ismatech.v1i1
Core Subject : Engineering,
Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Industrial & Manufacturing Engineering Mechanical Engineering Transportation
Focus and Scope Research titles encompassed by this journal include, but are not limited to: Naval Architecture: covering ship strength, Ship Hydrodynamics, Ship Construction, Ship Production Management, Wooden and FRP Ship Materials, Ship Design Innovation, Ship Vibration and Noise, Welding Technology, Fatigue, Sea Transportation, Computational Fluid Dynamic Modeling. Marine Engineering: encompassing Engine Performance, Renewable Fuels, Dual fuel system, Ship electricity, Ship Resistance, Ship piping systems, Ship reliability). Ocean engineering: Marine and Offshore Structures, Coastal Structures and Management, Port Structures and Management, Subsea Umbilicals, Risers and Flowlines (SURF), Ocean Renewable Energy, Marine Instrumentation, Marine Pollution. Mechanical engineering: addressing Tribology, Energy Studies, Engines and Turbines, Heat Transfer, Fluid Mechanics, Lubrication and Wear, Materials Science, Mechatronics, Refrigeration and air conditioning, Pressure analysis, Structural and mechanical design, Renewable energy, Structural mechanics, Thermodynamics, Materials processing, Vibration).
Arjuna Subject : Teknik (semua kategori) - Teknik Kelautan
Articles 7 Documents
 1 
Search results for , issue "Vol. 2 No. 2 (2024): Volume 2 Issue 2, December 2024" : 7 Documents clear
The Influence of Fiberglass Fiber Arrangement Variations on the Tensile and Bending Strength of Ships Muharom, Restu; Alamsyah; Hidayat, Taufik; Syahab , Husein
Indonesian Journal of Maritime Technology Vol. 2 No. 2 (2024): Volume 2 Issue 2, December 2024
Publisher : Naval Architecture Department, Kalimantan Institut of Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35718/ismatech.v2i2.1203

Abstract

The use of Fiberglass Reinforced Plastic (FRP) as a substitute for wood in the shipbuilding industry in Indonesia is increasing, particularly in small vessels under 5 GT. Challenges in obtaining high-quality wood have driven fishermen and the shipbuilding industry to shift towards composite chopped materials such as fiberglass. This research aims to evaluate the tensile and bending strengths of fiberglass composites made using the hand lay-up method with variations of random fiber layers as well as fibers oriented at 0° and 90°. The tests were conducted according to ASTM D638-14 and D790 standards, with the results showing that the chopped-woven-hybrid fiber configuration produced the highest tensile strength of 38.174 MPa, while the chopped-chopped-woven-woven configuration produced the highest bending strength of 104.44 MPa. However, all the tested fiber layer variations did not meet the standards of the Indonesian Classification Bureau (BKI), indicating the need for further optimization in layer arrangement to achieve the desired quality. Additionally, the FRP boat-building training program conducted in Gisik Cemandi Village demonstrated that traditional boat craftsmen can adapt to this new technology, which offers an effective solution to wood scarcity while enhancing the quality and safety of vessels. This research supports the development of FRP as a more reliable, efficient, and environmentally friendly material for shipbuilding, particularly in the fisheries and small shipping sectors in Indonesia. The broader adoption of FRP technology is expected to address environmental and economic challenges in the national shipbuilding industry
CFD-Preliminary Design and Stability Analysis of a High-Speed Firefighting Boat for Remote Island Waterways Wirawan, Moh.Winki; Oloan, Achdri Fauzi Nugraha; Subakti, Albert Gabriel; Batosai, Joan Rike
Indonesian Journal of Maritime Technology Vol. 2 No. 2 (2024): Volume 2 Issue 2, December 2024
Publisher : Naval Architecture Department, Kalimantan Institut of Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35718/ismatech.v2i2.1228

Abstract

The Seribu Islands, administered by the DKI Jakarta Provincial Government, cover an area of 4,745.62 km², with 8.76 km² of land spread across two sub-districts and six major islands: Kelapa, Harapan, Panggang, Tidung, Pari, and Untung Jawa. While these islands are popular tourist destinations with adequate transport facilities, the remote, water-surrounded nature of the area poses challenges for emergency response, particularly firefighting. To address this, the authors designed a firefighting vessel optimized for quick deployment and effective fire suppression. The design process focused on determining optimal dimensions and minimizing hydrodynamic resistance through hull variation using effect of length on resistance method, followed by exponential regression. The vessel’s main dimensions are LOA 16.5 m, LPP 15.588 m, beam 4.9 m, depth 2.5 m, draft 0.9 m, and a top speed of 36 knots. Four hull configurations with varying chine type and angles (0°, 10°, and 17°) were simulated in Numeca Fine Marine (CFD) and Maxsurf. The third hull variation achieved the lowest resistance, with a resistance value of 67.12 kN. Equipped with a pump capacity of 474 m³/h and a spray range of 25 m, the vessel provides effective firefighting capabilities. Stability analysis, including fire monitor placement variations, indicates the optimal trim and stability with a Max GZ angle of 50° and a roll period of 3.14 seconds. This design demonstrates a feasible solution for firefighting within the Seribu Islands’ unique aquatic environment.
Rubber Tyred Gantry (RTG) Failure Analysis Using FMEA Method at PT. Kaltim Kariangau Terminal Balikpapan Fitriah, Rifkah; Andi Ningrat; Dwi Wahyuni Rahman; Andi Rachmianty AM; Muslihati; Wardina Suwedy
Indonesian Journal of Maritime Technology Vol. 2 No. 2 (2024): Volume 2 Issue 2, December 2024
Publisher : Naval Architecture Department, Kalimantan Institut of Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35718/ismatech.v2i2.1261

Abstract

Failure Mode and Effect Analysis (FMEA) is a method designed to evaluate system designs by identifying various failure modes of a system, which consists of multiple components, and analyzing their impacts on the system's reliability. The primary goal of FMEA is to identify and address key issues at every stage of the design and production process to prevent defective products from reaching customers, thereby safeguarding the company’s reputation. This study aims to identify the types of damage occurring in Kalmar-brand Rubber Tyred Gantry (RTG) equipment at PT. Kaltim Kariangau Terminal Balikpapan and analyze these failures using the FMEA method. Data collection was conducted through field observations, interviews, and documentation. The FMEA calculations also include repair recommendations for each identified failure. Based on the analysis, several failures were found to rank highest in severity for each piece of equipment. For RTG 07, the most critical failure was the "Trouble Hoist," requiring corrective actions such as repairs to the motor system, brakes, and gearbox.
The Analysis of Work Accident Risk in Welding Process for Pipe Repair on Utility Boat PT LSM Rachmianty, Andi; Pragawati, Ni Gusti Ayu Putu Dewi Armay; Ningrat, Andi; Usman, Arif Fudddin; Rusnaedi; Shauqy, Muhammad Azhar
Indonesian Journal of Maritime Technology Vol. 2 No. 2 (2024): Volume 2 Issue 2, December 2024
Publisher : Naval Architecture Department, Kalimantan Institut of Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35718/ismatech.v2i2.1263

Abstract

PT LSM is a shipping company committed to focusing on providing integrated maritime services to support the oil & gas industry, PT LSM has a variety of offshore vessels to support these activities. LSM's shipping area is a rig area, where the area has a high level of danger and risk, therefore an adequate ship is needed both in crew and equipment on board. Especially in the piping system on board, if a leak occurs it can cause fatal things such as engine damage to an explosion and can cause work accidents such as fire and death. To minimize work accidents, risk hazard identification and risk control are made in each job, especially in piping work, namely pipe welding using the HIRADC method. This study used a descriptive qualitative method, in which the authors conducted field observations, interviews, and distributed questionnaires. The results of risk hazard identification, risk assessment and risk control will be entered in the HIRADC (Hazard Identification, Risk Assessment, and Determining Control) table. The conclusion of this study is that 43 hazards and 47 risks have been identified in pipe welding work. In the initial control, the low risk level was 42 risks (89.36%), the medium risk level was 5 risks (10.63%), and the high-risk level was 0 risks (0%). After further control of the identified risks, the risk level of medium risk (10.63%) has changed to low risk, so that all risk levels of the LSM Provider's ship pipe welding work have changed to a low risk level with a total of 47 risks (100%)). The controls used in pipe welding work are substitution, administration, and personal protective equipment (PPE).
Optimizing Container Crane Performance: Enhancing Loading and Unloading Productivity at PT. Kaltim Kariangau Terminal Ningrat, Andi; Tahir, Anwar; Rusnaedi; Reskyani; Muslihati
Indonesian Journal of Maritime Technology Vol. 2 No. 2 (2024): Volume 2 Issue 2, December 2024
Publisher : Naval Architecture Department, Kalimantan Institut of Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35718/ismatech.v2i2.1264

Abstract

Container terminals are critical nodes in global trade, where productivity hinges on the efficiency of handling equipment like container cranes. At PT. Kaltim Kariangau, a terminal jointly managed by PT. Pelindo and the East Kalimantan provincial government, operational challenges persist despite infrastructure enhancements. In 2023, an additional crane was introduced to the terminal, increasing the total to three. However, issues such as prolonged idle times and equipment malfunctions adversely impacted crane efficiency. This research evaluates crane performance using BCH (Box/Crane/Hour) and BSH (Box/Ship/Hour) metrics to assess their effect on loading and unloading productivity. The analysis reveals that in 2023, the average crane performance was 27 boxes/hour, a level classified as good. Paradoxically, overall productivity declined post-crane addition compared to prior operations. Using regression analysis, the study identifies a strong positive correlation (R = 0.7316) between crane performance and terminal productivity, with a coefficient of determination (R²) indicating that crane efficiency accounts for 54% of productivity variations. The findings highlight that improved crane performance directly enhances operational output, where each unit increase in BCH corresponds to a 1.809-unit rise in productivity. Hypothesis testing confirms that crane performance significantly influences loading and unloading efficiency. These results underscore the need for effective equipment utilization and maintenance strategies to optimize terminal operations. The research concludes that while infrastructure upgrades are essential, addressing operational inefficiencies is critical to achieving sustainable productivity improvements.
Vehicle Loading and Unloading Activities at MV Aishakamilah, Hazard Identification, Risk Assessment and Risk Control Usman, Arif Fuddin; Asmarita, Sri; Murtafiah, Andi; Ningrat, Andi; Sudarman
Indonesian Journal of Maritime Technology Vol. 2 No. 2 (2024): Volume 2 Issue 2, December 2024
Publisher : Naval Architecture Department, Kalimantan Institut of Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35718/ismatech.v2i2.1267

Abstract

This research is to determine risk control from the results of identifying hazards that are likely to occur in loading and unloading activities on the MV. Aishakamila. The informans in this study were operational workers and crew of Kalla Lines at the port totaling 20 people with the Purposive Sampling technique. The results of this study found that the identified hazards in the loading and unloading process at PT. Bumi Lintas Tama, there were 21 identified hazards. The results of the risk assessment obtained from the 21 identified hazards from the loading and unloading process activities on the MV. Aishakamilah at the PT. Bumi Lintas Tama Car Terminal, there were results from the risk level after control was carried out, namely the High Risk level of 0 risks, the Moderate Risk level of 3 and the Low Risk level of 18 risks. From the observations conducted by researchers in the field, the loading and unloading activities on the MV. Aishakamila have 4 risk control hierarchies applied. The risk controls applied are substitution, engineering, administration, and personal protective equipment. From the results of the study, a way to reduce the level of risk of danger in vehicle loading and unloading operations on the MV. Aishakamilah is obtained by conducting a briefing before carrying out loading and unloading activities and always paying attention to PPE in working and paying attention to applicable SOPs
CAD Technology Workshop with the Pierre Bougher Approach in Building Traditional Wooden Ships at Kelompok Usaha Bersama (KUB) Nenang Berlayar North Penajam Paser Hariyono, Hariyono; Ikhwani, Rodlian Jamal; Sitorus, Chris Jeremy Verian; Kustiwansa, Harlian
Indonesian Journal of Maritime Technology Vol. 2 No. 2 (2024): Volume 2 Issue 2, December 2024
Publisher : Naval Architecture Department, Kalimantan Institut of Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35718/ismatech.v2i2.1279

Abstract

Program in the form of a CAD Technology Workshop using the Pierre Bouguer approach aims to improve the skills of traditional wooden ship craftsmen in the Kelompok Usaha Bersama (KUB) Nenang Berlayar, Penajam Paser Utara. This activity introduces Computer-Aided Design (CAD) technology as a modern solution to increase the precision, efficiency and quality of wooden ship designs without eliminating traditional values. Pierre Bouguer's approach which focuses on the stability and balance of the ship through drawing lines plans was applied to produce a better design from a technical and safety perspective. Implementation methods include intensive training, technical assistance, and ongoing evaluation, supported by lecturers and students from the Kalimantan Institute of Technology (ITK). The results of the activity showed a significant increase in craftsmen's understanding and ability to use CAD, as seen from the post-test results of participants who achieved an application level above 90%. This program not only helps craftsmen adopt modern technology but also creates a sustainable learning ecosystem through an online-based community. It is hoped that the application of CAD technology can encourage innovation in traditional wooden shipbuilding, increase competitiveness, and provide added economic value for craftsmen amidst the challenges of modernizing the maritime industry.

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